108972761438 has 32 divisors (see below), whose sum is σ = 168374384640. Its totient is φ = 52865648640.

The previous prime is 108972761437. The next prime is 108972761449. The reversal of 108972761438 is 834167279801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108972761431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12627281 + ... + 12635907.

It is an arithmetic number, because the mean of its divisors is an integer number (5261699520).

Almost surely, 2^108972761438 is an apocalyptic number.

108972761438 is a deficient number, since it is larger than the sum of its proper divisors (59401623202).

108972761438 is a wasteful number, since it uses less digits than its factorization.

108972761438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9632.

The product of its (nonzero) digits is 4064256, while the sum is 56.

The spelling of 108972761438 in words is "one hundred eight billion, nine hundred seventy-two million, seven hundred sixty-one thousand, four hundred thirty-eight".